collectionView的注意事项

最新推荐文章于 2021-10-11 17:45:31 发布

Running_allTheTime

最新推荐文章于 2021-10-11 17:45:31 发布

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分类专栏： iOS 基础

本文链接：https://blog.youkuaiyun.com/Running_allTheTime/article/details/50476656

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1：有headerView 和 footerView

做法：

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath

{

UICollectionReusableView *reusableView = nil;

if (kind == UICollectionElementKindSectionHeader) {

if (indexPath.section == 2) {

YQHomeJieDuanCollectionReusableView *reviewHeader = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"YQHomeJieDuanCollectionReusableView" forIndexPath:indexPath];

reusableView = reviewHeader;

}

if (kind == UICollectionElementKindSectionFooter) {

YQSectionCollectionReusableView *reViewFooter = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"YQSectionCollectionReusableView" forIndexPath:indexPath];

reusableView = reViewFooter;

}

return reusableView;

}

2：cell用xib的话别忘了注册。

做法：

UINib *nib = [UINib nibWithNibName:@"YQHomeFeedBigImageCollectionViewCell" bundle:nil];

[self.baseCollectionView registerNib:nib forCellWithReuseIdentifier:@"YQHomeFeedBigImageCollectionViewCell"];

3：xib 做成的headerView或者footerView 要手动将xib 的引用类改为自己建的类名。要不然会崩溃

4：注册headerView或者footerView

做法：

UINib *nib5 = [UINib nibWithNibName:@"YQHomeJieDuanCollectionReusableView" bundle:nil];

[self.baseCollectionView registerNib:nib5 forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"YQHomeJieDuanCollectionReusableView"];

UINib *nib6 = [UINib nibWithNibName:@"YQSectionCollectionReusableView" bundle:nil];

[self.baseCollectionView registerNib:nib6 forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"YQSectionCollectionReusableView"];